As a young girl in a blue collar neighbourhood of Pasadena, Taylor Young watched the selection of the Rose Bowl queen every year with fascination and envy. When she grew up, Taylor decided that she'd be beautiful and popular and have stylish clothes too. She would marry a handsome, successful man and live happily ever after. At 36, Taylor is at the pinnacle of her dreams. She has a successful software billionaire husband, three beautiful girls and a life of luxury in an exclusive enclave in Bellevue. But her picture-perfect life is about to unravel...As the new school year draws near, Taylor prepares herself for another term of playing the perfect alpha mom, organizing class activities and fundraising, including chairing the school auction. To her horror, Taylor's archrival, bohemian mom Marta Zinsser, is named Head Room Mom for her daughter Jemma's Fifth Grade Class. From that moment forward, this alpha mom will do everything she can to overrule Marta's influence at committee meetings and school activities. Tensions rise and the two rivals seem destined for a final confrontation.